Release calc version 2.10.2t30

endian.c

@@ -0,0 +1,78 @@
+/*
+ * endian - Determine the byte order of a long on your machine.
+ *
+ * Big Endian:	    Amdahl, 68k, Pyramid, Mips, Sparc, ...
+ * Little Endian:   Vax, 32k, Spim (Dec Mips), i386, i486, ...
+ */
+/*
+ * Copyright (c) 1993 by Landon Curt Noll.  All Rights Reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright, this permission notice and text
+ * this comment, and the disclaimer below appear in all of the following:
+ *
+ *	supporting documentation
+ *	source copies
+ *	source works derived from this source
+ *	binaries derived from this source or from derived source
+ *
+ * LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
+ * EVENT SHALL LANDON CURT NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+ * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * chongo was here	/\../\
+ */
+
+#include <stdio.h>
+
+#include "have_unistd.h"
+#if defined(HAVE_UNISTD_H)
+#include <unistd.h>
+#endif
+
+/* byte order array */
+char byte[8] = { (char)0x12, (char)0x36, (char)0x48, (char)0x59,
+		 (char)0x01, (char)0x23, (char)0x45, (char)0x67 };
+
+MAIN
+main(void)
+{
+    /* pointers into the byte order array */
+    int *intp = (int *)byte;
+#if defined(DEBUG)
+    short *shortp = (short *)byte;
+    long *longp = (long *)byte;
+
+    printf("byte: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+	byte[0], byte[1], byte[2], byte[3],
+	byte[4], byte[5], byte[6], byte[7]);
+    printf("short: %04x %04x %04x %04x\n",
+	shortp[0], shortp[1], shortp[2], shortp[3]);
+    printf("int: %08x %08x\n",
+	intp[0], intp[1]);
+    printf("long: %08x %08x\n",
+	longp[0], longp[1]);
+#endif
+
+    /* Print the standard <machine/endian.h> defines */
+    printf("#define BIG_ENDIAN\t4321\n");
+    printf("#define LITTLE_ENDIAN\t1234\n");
+
+    /* Determine byte order */
+    if (intp[0] == 0x12364859) {
+	/* Most Significant Byte first */
+	printf("#define BYTE_ORDER\tBIG_ENDIAN\n");
+    } else if (intp[0] == 0x59483612) {
+	/* Least Significant Byte first */
+	printf("#define BYTE_ORDER\tLITTLE_ENDIAN\n");
+    } else {
+	fprintf(stderr, "Unknown int Byte Order, set BYTE_ORDER in Makefile\n");
+	exit(1);
+    }
+    exit(0);
+}